What causes a SPN 7364 code?

SPN 7364 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a SPN 7364 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with SPN 7364 active.

How do I fix SPN 7364?

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

J1939 SPN

SPN 7364

Cummins fault code 7364

What it means

Cummins SPN 7364 usually maps to Fault Code 559 in the Cummins system: 'Fuel Pressure Lower Than Commanded'. It indicates the Engine Control Module (ECM) detected that actual fuel rail pressure was more than 100 bar (1450 psi) below the commanded pressure for a specific duration.